论文部分内容阅读
为提高散体材料桩的力学性能和废弃橡胶轮胎在建筑领域的应用,提出一种新型轮胎桩。由于橡胶轮胎具有很好的环向及径向抗拉强度,在荷载作用下,可以有效发挥橡胶轮胎的环箍作用,增强散体材料的抗剪切能力。笔者通过室内模型试验研究了轮胎桩复合地基承载力特性以及轮胎桩内不同填充物、不同直径的轮胎桩和不同下卧层刚度对轮胎桩复合地基承载性状的影响。结果表明:轮胎桩单桩复合地基能够减小地基沉降,增加地基承载力;橡胶轮胎桩中填充料的性质可以影响轮胎桩单桩复合地基的承载能力,混凝土废骨料可以代替河砂作为橡胶轮胎桩的填充物;轮胎桩复合地基随着轮胎尺寸的增加,承载力先变大后减小;下卧层刚度的变化对轮胎桩复合地基承载力的影响较大。
In order to improve the mechanical properties of the bulk material pile and the application of discarded rubber tire in the construction field, a new type of tire pile is proposed. As the rubber tire has good circumferential and radial tensile strength, under the action of the load, it can effectively play the role of rubber tire hoop and enhance the anti-shear capacity of the bulk material. Through indoor model test, the author studies the bearing capacity of the tire-pile composite foundation and the effect of different filling, different diameter tire piles and different subsurface stiffness on the bearing capacity of the tire-pile composite foundation in the tire piles. The results show that the composite foundation of tire pile and single pile can reduce the settlement of foundation and increase the bearing capacity of foundation. The properties of filler in rubber tire pile can affect the bearing capacity of composite foundation of single pile of tire pile. Concrete waste aggregate can replace river sand as rubber The bearing capacity of the tire-pile composite foundation first increases and then decreases with the increase of the tire size. The change of the subsoil stiffness has a great influence on the bearing capacity of the composite foundation of tire-piles.